Question

If $a\in I^{+}$ ($a$ belongs to positive integer), and $a+a=0$ then find $a.$

• A. $0$
• B. $1$
• C. $-1$
• D. Not possible to get any value of $a$

Answer 1

The correct option is D Not possible to get any value of $a$

Given: $a\in I^{+}$ and $a+a=0$

• As we know, sum of two positive integers is a positive integer always.
• Therefore, no such positive integer $a$ is possible to find such that $a+a=0.$

Hence, option (d.) is the correct choice.